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<p>The C++ standards committee publishes experimental C++ language and library extensions for future standardization.
</p><p>Note: until 2012, these publications used the TR (technical report) format. Since 2012 ISO procedure changed to use the TS (technical specification) format.
</p>
<table class="wikitable">

<tr>
<th>ISO number</th>
<th>Name</th>
<th>Status</th>
<th>links
</th></tr>
<tr>
<td> ISO/IEC TR 18015:2006
</td>
<td> Technical Report on C++ Performance
</td>
<td> Published 2006 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/43351.html">ISO store</a>).
<p>Draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/TR18015.pdf">TR18015</a> (2006-02-15).
</p>
</td>
<td>
</td></tr>
<tr>
<td> ISO/IEC TR 19768:2007
</td>
<td> Technical Report on C++ Library Extensions
</td>
<td> Published 2007-11-15 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/43289.html">ISO store</a>).
<p>Draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf">n1836</a> (2005-06-24)<br>
ISO 29124 split off, the rest merged into C++11.
</p>
</td>
<td>
</td></tr>
<tr>
<td> ISO/IEC 29124:2010
</td>
<td> Extensions to the C++ Library to support mathematical special functions
</td>
<td> Published 2010-09-03 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/50511.html">ISO Store</a>).
<p>Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3060.pdf">n3060</a> (2010-03-06).<br>
<span style="font-size:21px;color:green"><b>✔</b></span><a href="numeric/special_functions.html" title="cpp/numeric/special functions">Merged into C++17</a>.
</p>
</td>
<td> <a href="experimental/special_math.html" title="cpp/experimental/special functions">special functions</a>
</td></tr>
<tr>
<td> ISO/IEC TR 24733:2011
</td>
<td> Extensions for the programming language C++ to support decimal floating-point arithmetic
</td>
<td> Published 2011-10-25 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/38843.html">ISO Store</a>)
<p>Draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2849.pdf">n2849</a> (2009-03-06).<br>
May be superseded by a future TS or merged into a future revision of C++ (most recent merge proposal was <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3871.html">n3871</a>).
</p>
</td>
<td>
</td></tr>
<tr>
<td> ISO/IEC TS 18822:2015
</td>
<td> C++ File System Technical Specification
</td>
<td> Published 2015-06-18 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/63483.html">ISO store</a>). Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4100.pdf">n4100</a> (2014-07-04).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span><a href="filesystem.html" title="cpp/filesystem">Merged into C++17</a>.
</p>
</td>
<td> <a href="experimental/fs.html" title="cpp/experimental/fs">filesystem</a>
</td></tr>
<tr>
<td> ISO/IEC TS 19570:2015
</td>
<td> C++ Extensions for Parallelism
</td>
<td> Published 2015-06-24. (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/65241.html">ISO Store</a>). Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4507.pdf">n4507</a> (2015-05-05).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span>Merged into C++17.
</p>
</td>
<td> <a href="experimental/parallelism.html" title="cpp/experimental/parallelism">parallelism</a>
</td></tr>
<tr>
<td> ISO/IEC TS 19841:2015
</td>
<td> Transactional Memory TS
</td>
<td> Published 2015-09-16, (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/66343.html">ISO Store</a>). Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4514.pdf">n4514</a> (2015-05-08).
</td>
<td> <a href="language/transactional_memory.html" title="cpp/language/transactional memory">transactional memory</a>
</td></tr>
<tr>
<td> ISO/IEC TS 19568:2015
</td>
<td> C++ Extensions for Library Fundamentals
</td>
<td> Published 2015-09-30, (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/65238.html">ISO Store</a>). Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html">n4480</a> (2015-04-07).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span>Merged into C++17 except for invocation traits.
</p>
</td>
<td><a href="experimental/memory.html" title="cpp/experimental/lib extensions">library extensions</a>
</td></tr>
<tr>
<td> ISO/IEC TS 19217:2015
</td>
<td> C++ Extensions for Concepts
</td>
<td> Published 2015-11-13 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/64031.html">ISO Store</a>). Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4553.pdf">n4553</a> (2015-10-02). Current draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/p0734r0.pdf">p0734r0</a> (2017-07-14).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span><a href="language/constraints.html" title="cpp/language/constraints">Merged into C++20</a> (with modifications).
</p>
</td>
<td><a href="experimental/constraints.html" title="cpp/experimental/constraints">constraints and concepts</a>
</td></tr>
<tr>
<td> ISO/IEC TS 19571:2016
</td>
<td> C++ Extensions for Concurrency
</td>
<td> Published 2016-01-19 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/65242.html">ISO Store</a>). Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0159r0.html">p0159r0</a> (2015-10-22).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span>Partially merged into C++20.
</p>
</td>
<td> <a href="experimental/concurrency.html" title="cpp/experimental/concurrency">concurrency</a>
</td></tr>
<tr>
<td> ISO/IEC TS 19568:2017
</td>
<td> C++ Extensions for Library Fundamentals, Version 2
</td>
<td> Published 2017-03-30 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/70587.html">ISO Store</a>). Draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/n4617.pdf">n4617</a> (2016-11-28).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span>Partially merged into C++17 and C++20.
</p>
</td>
<td> <a href="experimental/lib_extensions_2.html" title="cpp/experimental/lib extensions 2">library extensions 2</a>
</td></tr>
<tr>
<td> ISO/IEC TS 21425:2017
</td>
<td> Ranges TS
</td>
<td> Published 2017-12-05 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/70910.html">ISO Store</a>). Draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/n4685.pdf">n4685</a> (2017-07-31).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span><a href="ranges.html" title="cpp/ranges">Merged into C++20</a>.
</p>
</td>
<td> <a href="experimental/ranges.html" title="cpp/experimental/ranges">ranges</a>
</td></tr>
<tr>
<td> ISO/IEC TS 22277:2017
</td>
<td> Coroutines TS
</td>
<td> Published 2017-12-05 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/73008.html">ISO Store</a>). Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/n4736.pdf">n4736</a> (2018-03-31). Latest draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/n4775.pdf">n4775</a> (2018-10-07).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span><a href="coroutine.html" title="cpp/coroutine">Merged into C++20</a>.
</p>
</td>
<td>
</td></tr>
<tr>
<td> ISO/IEC TS 19216:2018
</td>
<td> Networking TS
</td>
<td> Published 2018-04-24 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/64030.html">ISO Store</a>). Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/n4734.pdf">n4734</a> (2017-04-04). Latest draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/n4771.pdf">n4771</a> (2018-10-08).
</td>
<td> <a href="experimental/networking.html" title="cpp/experimental/networking">networking</a>
</td></tr>
<tr>
<td> ISO/IEC TS 21544:2018
</td>
<td> Modules TS
</td>
<td> Published 2018-05-16 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/71051.html">ISO Store</a>). Final Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/n4720.pdf">n4720</a> (2018-01-29).<br>
<p><span style="font-size:21px;color:green"><b>✔</b></span><a href="language/modules.html" title="cpp/language/modules">Merged into C++20</a>.
</p>
</td>
<td>
</td></tr>
<tr>
<td> ISO/IEC TS 19570:2018
</td>
<td> Parallelism TS Version 2
</td>
<td> Published 2018-11-15 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/70588.html">ISO Store</a>). Final draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/n4793.pdf">n4793</a> (2018-11-26).
<p>Post-publication draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/n4808.pdf">n4808</a> (2019-03-11).
</p>
</td>
<td> <a href="experimental/parallelism_2.html" title="cpp/experimental/parallelism 2">parallelism 2</a>
</td></tr>
<tr>
<td> ISO/IEC TS 23619:2021
</td>
<td> Reflection TS
</td>
<td> Published 2021-10-11 (<a rel="nofollow" class="external text" href="https://www.iso.org/standard/76425.html">ISO store</a>). Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/n4856.pdf">n4856</a> (2020-03-02). Alternative draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p1240r2.pdf">p1240r2</a> (2022-01-15).
</td>
<td><a href="experimental/reflect.html" title="cpp/experimental/reflect">reflection</a>
</td></tr>
<tr>
<td>
</td>
<td> Numerics
</td>
<td> Early development. Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p1889r1.pdf">p1889r1</a> (2019-12-27).
</td>
<td>
</td></tr>
<tr>
<td> ISO/IEC AWI TS 9922
</td>
<td> Concurrency TS Version 2
</td>
<td> Early development. Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/n4895.pdf">n4895</a> (2021-08-15).
</td>
<td> <a href="https://en.cppreference.com/mwiki/index.php?title=cpp/experimental/concurrency_2&amp;action=edit&amp;redlink=1" class="new" title="cpp/experimental/concurrency 2 (page does not exist)">concurrency 2</a>
</td></tr>
<tr>
<td> ISO/IEC AWI TS 19568
</td>
<td> C++ Extensions for Library Fundamentals, Version 3
</td>
<td> Early development: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/n4908.html">n4908</a> (2022-02-20).
</td>
<td> <a href="experimental/lib_extensions_3.html" title="cpp/experimental/lib extensions 3">library extensions 3</a>
</td></tr>
<tr>
<td> ISO/IEC AWI TS 12907
</td>
<td> Transactional Memory TS, Version 2
</td>
<td> Early development: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/n4906.pdf">n4906</a> (2022-02-14).
</td>
<td>
</td></tr>
<tr>
<td>
</td>
<td> Pattern Matching
</td>
<td> Early development. Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2020/p1371r3.pdf">p1371r3</a> (2020-09-15).
</td>
<td>
</td></tr>
<tr>
<td>
</td>
<td> Linear Algebra
</td>
<td> Early development. Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2020/p1385r6.pdf">p1385r6</a> (2020-03-01) and <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p1673r4.html">p1673r4</a> (2021-08-15).
</td>
<td>
</td></tr>
<tr>
<td>
</td>
<td> 2D Graphics
</td>
<td> Early development. Draft <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p0267r10.pdf">p0267r10</a> (2019-10-07).
</td>
<td>
</td></tr>
<tr>
<td> ISO/IEC NP 19569
</td>
<td> Array Extensions TS
</td>
<td> <span style="font-size:21px;color:red"><b>×</b></span> Withdrawn. Abandoned draft: <a rel="nofollow" class="external text" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3820.html">n3820</a> (2013-10-10).
</td>
<td>
</td></tr></table>
<h3><span class="mw-headline" id="See_also">See also</span></h3>
<table class="t-dsc-begin">

</table>

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